/Engine/Source/Runtime/MeshDescription/Public/MeshDescription.h
Returns the vertices which form the polygon perimeter
[TArray](API\Runtime\Core\Containers\TArray)< [FVertexID](API\Runtime\MeshDescription\FVertexID) > GetPolygonVertices ( const [FPolygonID](API\Runtime\MeshDescription\FPolygonID) PolygonID ) const